Abstract
Silicon is not considered an essential element for plant development and growth, but its absorption brings several benefits to some crops, especially rice, by increasing cellular wall thickness, providing mechanical resistance to the penetration of fungi, improving the opening angle of leaves and making them more erect, decreasing self-shading and increasing resistance to lodging, especially under high nitrogen rates. To evaluate the effects of nitrogen and silicon fertilization on vegetative and yield components, plant height, and yield of rice cultivar IAC 202, an experiment was carried out combining three nitrogen rates (5, 75 and 150 mg N kg-1 soil) applied as urea, and four silicon rates (0, 200, 400 and 600 mg SiO2 kg-1 soil) applied as calcium silicate. Trial was set up in a completely randomized design 3 ´ 4 factorial scheme, (N = 5). Nitrogen fertilization increased the number of stems and panicles per square meter and the total number of spikelets, reflecting on grain productivity. Excessive tillering caused by inadequate nitrogen fertilization reduced the percentage of fertile stalks, spikelet fertility and grain mass. Silicon fertilization reduced the number of blank spikelets per panicles and increased grain mass, but did not affect grain productivity.
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Claims 6
Claim · model-written summary
Nitrogen fertilization increased rice stems, panicles and total spikelets.
- Taxon
- rice
Oryza sativat0 - Treatment
- Nitrogen fertilizatione0
- Outcome
- number of stems and panicles per square meter and the total number of spikeletse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen fertilization increased the number of stems and panicles per square meter and the total number of spikelets”
t0“rice”
Claim · model-written summary
Nitrogen fertilization increased grain productivity through yield components.
- Taxon
- riceOryza sativat0
- Treatment
- Nitrogen fertilizatione0
- Outcome
- grain productivitye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen fertilization increased the number of stems and panicles per square meter and the total number of spikelets, reflecting on grain productivity”
t0“rice”
Claim · model-written summary
Excessive tillering from inadequate nitrogen fertilization reduced fertile stalk percentage, spikelet fertility and grain mass.
- Taxon
- riceOryza sativat0
- Treatment
- inadequate nitrogen fertilizatione0
- Outcome
- percentage of fertile stalks, spikelet fertility and grain masse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Excessive tillering caused by inadequate nitrogen fertilization reduced the percentage of fertile stalks, spikelet fertility and grain mass.”
t0“rice”
Claim · model-written summary
Silicon fertilization reduced blank spikelets per panicle.
- Taxon
- riceOryza sativat0
- Treatment
- Silicon fertilizatione0
- Outcome
- number of blank spikelets per paniclese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Silicon fertilization reduced the number of blank spikelets per panicles”
t0“rice”
Claim · model-written summary
Silicon fertilization increased grain mass.
- Taxon
- riceOryza sativat0
- Treatment
- Silicon fertilizatione0
- Outcome
- grain masse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Silicon fertilization reduced the number of blank spikelets per panicles and increased grain mass”
t0“rice”
Claim · model-written summary
Silicon fertilization did not affect grain productivity.
- Taxon
- riceOryza sativat0
- Treatment
- Silicon fertilizatione0
- Outcome
- grain productivitye0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Silicon fertilization reduced the number of blank spikelets per panicles and increased grain mass, but did not affect grain productivity.”
t0“rice”
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